Geodesic
Identification of a~polynomial in nonseparated boundary conditions in the case of a~multiple zero eigenvalue
Ufa mathematical journal, Tome 7 (2015) no. 1, pp. 13-18

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In the work we discuss the problem of recovering the coefficients of a polynomial in spectral problems with nonseparated boundary conditions by one multiple zero eigenvalue and $n$ nonzero eigenvalues. A uniqueness theorem is proved.
Keywords: eigenvalues, boundary conditions, characteristic determinant. 
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     title = {Identification of a~polynomial in nonseparated boundary conditions in the case of a~multiple zero eigenvalue},
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A. M. Akhtyamov; R. R. Kumushbaev. Identification of a~polynomial in nonseparated boundary conditions in the case of a~multiple zero eigenvalue. Ufa mathematical journal, Tome 7 (2015) no. 1, pp. 13-18. http://geodesic.mathdoc.fr/item/UFA_2015_7_1_a1/